摘要: #include <bits/stdc++.h> using namespace std; int main(){ char a; cin>>a; if(a>=65 && a<=97){ a-=32; cout<<a; }else if(a>=97 && a<=122){ a+=32; cout<< 阅读全文
posted @ 2023-09-15 20:24 fushuxuan1 阅读(32) 评论(0) 推荐(0)